Not a new subject. It is also talked about here: https://10fastfingers.com/forum/viewtopic.php?f=11&t=72
But that's a long time ago, and nothing have been implemented.
What errors do I do? Are there any words I keep getting wrong? What letter do I most often miss press?
Feedback and statistics would help me improve. Perhaps I even could practice those words I most often misspell?